ARITHMETIC SEQUENCE A sequence of numbers where each number is
increased or decreased by the same amount to get the next term A
sequence of numbers where each number is increased or decreased by
the same amount to get the next term The same amount is often known
as the common difference (d) The same amount is often known as the
common difference (d)
Slide 3
PRACTICE 2, 5, 8, 11, 14, ____,____,_____ 2, 5, 8, 11, 14,
____,____,_____ What are the missing numbers? What are the missing
numbers? What is the common difference? What is the common
difference?
Slide 4
PRACTICE -1, -6, -11, -16, -21, ____,____,____ -1, -6, -11,
-16, -21, ____,____,____ What are the missing numbers? What are the
missing numbers? What is the common difference? What is the common
difference?
Slide 5
WHAT IF I WANT THE 50 TH TERM?
Slide 6
2, 5, 8, 11, 14 2 nd term has 1 three 3 rd term has 2 threes 4
th term has 3 threes 5 th term has 4 threes See a pattern?
Slide 7
THE FORMULA
Slide 8
Slide 9
Any term Multiply by one less than whatever term you want 1st
term Common Difference
